Source : Webster's Revised Unabridged Dictionary (1913)

Saxon \Sax"on\ (s[a^]ks"[u^]n or -'n), n. [L. Saxo, pl. Saxones,
   from the Saxon national name; cf. AS. pl. Seaxe, Seaxan, fr.
   seax a knife, a short sword, a dagger (akin to OHG. sahs, and
   perhaps to L. saxum rock, stone, knives being originally made
   of stone); and cf. G. Sachse, pl. Sachsen. Cf. {Saxifrage}.]
   1.
      (a) One of a nation or people who formerly dwelt in the
          northern part of Germany, and who, with other Teutonic
          tribes, invaded and conquered England in the fifth and
          sixth centuries.
      (b) Also used in the sense of Anglo-Saxon.
      (c) A native or inhabitant of modern Saxony.

   2. The language of the Saxons; Anglo-Saxon.

   {Old Saxon}, the Saxon of the continent of Europe in the old
      form of the language, as shown particularly in the
      ``Heliand'', a metrical narration of the gospel history
      preserved in manuscripts of the 9th century.

German \Ger"man\, n.; pl. {Germans}[L. Germanus, prob. of Celtis
   origin.]
   1. A native or one of the people of Germany.

   2. The German language.

   3.
      (a) A round dance, often with a waltz movement, abounding
          in capriciosly involved figures.
      (b) A social party at which the german is danced.

   {High German}, the Teutonic dialect of Upper or Southern
      Germany, -- comprising Old High German, used from the 8th
      to the 11th century; Middle H. G., from the 12th to the
      15th century; and Modern or New H. G., the language of
      Luther's Bible version and of modern German literature.
      The dialects of Central Germany, the basis of the modern
      literary language, are often called Middle German, and the
      Southern German dialects Upper German; but High German is
      also used to cover both groups.

   {Low German}, the language of Northern Germany and the
      Netherlands, -- including {Friesic}; {Anglo-Saxon} or
      {Saxon}; {Old Saxon}; {Dutch} or {Low Dutch}, with its
      dialect, {Flemish}; and {Plattdeutsch} (called also {Low
      German}), spoken in many dialects.

Source : WordNet®

Old Saxon
     n : Low German prior to 1200